Estuary News, October 2002

San Francisco Estuary Partnership (SFEP) | October 15th, 2002

Estuary News, October 2005

San Francisco Estuary Partnership (SFEP) | October 15th, 2005

Estuary News, October 2007

San Francisco Estuary Partnership (SFEP) | October 15th, 2007

Estuary News, October 2022

San Francisco Estuary Partnership (SFEP) | October 15th, 2022

Estuary News, September 2015

San Francisco Estuary Partnership (SFEP) | September 15th, 2015

Estuary-wide Data Repository for Delta Environmental Data to Understand a California Estuary Poster (2017)

San Francisco Estuary Institute (SFEI) | July 1st, 2017

The Sacramento-San Joaquin Delta (Delta) has some of the most pressing water supply and natural resource management issues facing California. The Delta Environmental Da

The Sacramento-San Joaquin Delta (Delta) has some of the most pressing water supply and natural resource management issues facing California. The Delta Environmental Data for the Understanding a California Estuary (DEDUCE), a collaborative project building upon the 2014 Environmental Data Summit vision, initiated a forum to integrate disparate data from multiple sources along with legacy data not uploaded to any of the State’s data-sharing systems. DEDUCE collected legacy toxic contaminant data from the Delta according to rigorous business rules, uploaded the data to the expanded estuary-wide data repository, and established design standards to exchange datasets with the California Environmental Data Exchange Network (CEDEN), a contributor to the US Environmental Protection Agency’s Water Quality Exchange (WQX). This data integration effort liberated accurate, accessible, and synthesized data for scientists and decision-makers as a foundation to inform management actions with the best available science

Estuary-Wide Data Repository for the Delta Environmental Data to Understand a California Estuary

San Francisco Estuary Institute (SFEI) | July 1st, 2017

The Sacramento-San Joaquin Delta (Delta) is the backdrop for some of the most pressing water supply and natural resource management issues facing California. To navigate

The Sacramento-San Joaquin Delta (Delta) is the backdrop for some of the most pressing water supply and natural resource management issues facing California. To navigate such matters comprehensively with transparency, and rigor, it is important to ensure broad dissemination of data. An Environmental Data Summit held in 2014 created a new era in information management and knowledge discoveries, and shed light on challenges associated with the use of disparate datasets. The Delta Environmental Data for the Understanding a California Estuary (DEDUCE), a collaborative project, builds upon the Data Summit vision and initiated a forum to integrate disparate data from multiple sources and legacy data that are currently not in any of the State’s data sharing systems. DEDUCE expanded the existing infrastructure to house water quality data from the Delta to address management questions by identifying and collecting high priority data according to rigorous business rules and mapping these data to a central system. This important step of harmonizing the data improves its interoperability and increases the access to and exchange of high-quality environmental data. DEDUCE facilitates the upload, aggregation and display of data in tools such as those created under the auspices of the California Water Quality Monitoring Council, including EcoAtlas and My Water Quality Portals, and CD3: Contaminant Data Display and Download tool for accessing and visualizing data comparable to State standards. DEDUCE achieved collecting and uploading the legacy and toxic contaminant data, and established design standards to exchange future datasets from the initial data storage or database to California Environmental Data Exchange Network (CEDEN). This data integration effort created accurate, accessible, and synthesized data for scientists and decision-makers as a foundation to inform management actions with the best available science.

Evaluating a Laboratory Flume Microbiome as a Window into Natural Riverbed Biogeochemistry

Frontiers in Water (Frontiers) | March 18th, 2021

Riverbeds are hotspots for microbially-mediated reactions that exhibit pronounced variability in space and time. It is challenging to resolve biogeochemical mechanisms i

Riverbeds are hotspots for microbially-mediated reactions that exhibit pronounced variability in space and time. It is challenging to resolve biogeochemical mechanisms in natural riverbeds, as uncontrolled settings complicate data collection and interpretation. To overcome these challenges, laboratory flumes are often used as proxies for natural riverbed systems. Flumes capture spatiotemporal variability and thus allow for controlled investigations of riverbed biogeochemistry. These investigations implicitly rely on the assumption that the flume microbiome is similar to the microbiome of natural riverbeds. However, this assumption has not been tested and it is unknown how the microbiome of a flume compares to natural aquatic settings, including riverbeds. To evaluate the fundamental assumption that a flume hosts a microbiome similar to natural riverbed systems, we used 16s rRNA gene sequencing and publicly available data to compare the sediment microbiome of a single large laboratory flume to a wide variety of natural ecosystems including lake and marine sediments, river, lake, hyporheic, soil, and marine water, and bank and wetland soils. Richness and Shannon diversity metrics, analyses of variance, Bray-Curtis dissimilarity, and analysis of the common microbiomes between flume and river sediment all indicated that the flume microbiome more closely resembled natural riverbed sediments than other ecosystems, supporting the use of flume experiments for investigating natural microbially-mediated biogeochemical processes in riverbeds.

Evaluating the Accuracy of Reclamation’s 24-Month Study Lake Powell Projections

Utah State University | February 18th, 2022

The bias for inflow predictions will likely be reduced now that the reference period includes a more recent, and somewhat drier, span of time, but projections of future i

The bias for inflow predictions will likely be reduced now that the reference period includes a more recent, and somewhat drier, span of time, but projections of future inflows are likely to remain biased, because the hydrology of the 1991-2020 reference period was still wetter than the current Millennium Drought.

Exit here: Strategies for dealing with aging dams and reservoirs

Aquatic Sciences (Springer) | October 22nd, 2019

Aging infrastructure is prevalent throughout the world, but water control management structures, specifically dams, are of growing concern. Dams and their corresponding r

Aging infrastructure is prevalent throughout the world, but water control management structures, specifically dams, are of growing concern. Dams and their corresponding reservoirs have inherent, but separate, lifespans. The proportion of dams around the world that continue operation beyond their intended lifespans is growing at an alarming rate. Society will not only have to navigate the tradeoffs associated with the deterioration of services provided by reservoirs and dams, but also impending structural failures. Society is nearing a critical pinch point where we will have to decide how to deal with dams and reservoirs at scales that range from a single system to multiple systems in large watersheds. No comprehensive strategy exists to inform both the range of actions that can be applied to such infrastructure and how such actions would influence biophysical, socioeconomic, and geopolitical tradeoffs. The development of proactive exit strategies is a critical first step in ensuring controlled transitions for aging dams and reservoirs. Herein, we present an overview of actions and considerations for aging dams and reservoirs, followed by an initial framework for exit strategy development to launch a further discussion on how society could deal with this aging infrastructure.